chore(deps): bump pg from 1.6.2 to 1.6.3 (#526)

Author: dmitrytrager

Gemfile.lock

@@ -368,13 +368,13 @@ GEM
     parser (3.3.10.0)
       ast (~> 2.4.1)
       racc
-    pg (1.6.2)
-    pg (1.6.2-aarch64-linux)
-    pg (1.6.2-aarch64-linux-musl)
-    pg (1.6.2-arm64-darwin)
-    pg (1.6.2-x86_64-darwin)
-    pg (1.6.2-x86_64-linux)
-    pg (1.6.2-x86_64-linux-musl)
+    pg (1.6.3)
+    pg (1.6.3-aarch64-linux)
+    pg (1.6.3-aarch64-linux-musl)
+    pg (1.6.3-arm64-darwin)
+    pg (1.6.3-x86_64-darwin)
+    pg (1.6.3-x86_64-linux)
+    pg (1.6.3-x86_64-linux-musl)
     pp (0.6.3)
       prettyprint
     prettyprint (0.2.0)